/**
  ******************************************************************************
  * @file    stm32f4xx_usart.h
  * @author  MCD Application Team
  * @version V1.4.0
  * @date    04-August-2014
  * @brief   This file contains all the functions prototypes for the USART 
  *          firmware library.    
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT 2014 STMicroelectronics</center></h2>
  *
  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
  * You may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
  *
  *        http://www.st.com/software_license_agreement_liberty_v2
  *
  * Unless required by applicable law or agreed to in writing, software 
  * distributed under the License is distributed on an "AS IS" BASIS, 
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  ******************************************************************************  
  */

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32F4xx_USART_H
#define __STM32F4xx_USART_H

#ifdef __cplusplus
extern "C" {
#endif

/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx.h"

/** @addtogroup STM32F4xx_StdPeriph_Driver
  * @{
  */

/** @addtogroup USART
  * @{
  */

/* Exported types ------------------------------------------------------------*/

/** 
  * @brief  USART Init Structure definition  
  */

typedef struct
{
    uint32_t USART_BaudRate;            /*!< This member configures the USART communication baud rate.
                                           The baud rate is computed using the following formula:
                                            - IntegerDivider = ((PCLKx) / (8 * (OVR8+1) * (USART_InitStruct->USART_BaudRate)))
                                            - FractionalDivider = ((IntegerDivider - ((u32) IntegerDivider)) * 8 * (OVR8+1)) + 0.5 
                                           Where OVR8 is the "oversampling by 8 mode" configuration bit in the CR1 register. */

    uint16_t USART_WordLength;          /*!< Specifies the number of data bits transmitted or received in a frame.
                                           This parameter can be a value of @ref USART_Word_Length */

    uint16_t USART_StopBits;            /*!< Specifies the number of stop bits transmitted.
                                           This parameter can be a value of @ref USART_Stop_Bits */

    uint16_t USART_Parity;              /*!< Specifies the parity mode.
                                           This parameter can be a value of @ref USART_Parity
                                           @note When parity is enabled, the computed parity is inserted
                                                 at the MSB position of the transmitted data (9th bit when
                                                 the word length is set to 9 data bits; 8th bit when the
                                                 word length is set to 8 data bits). */

    uint16_t USART_Mode;                /*!< Specifies wether the Receive or Transmit mode is enabled or disabled.
                                           This parameter can be a value of @ref USART_Mode */

    uint16_t USART_HardwareFlowControl; /*!< Specifies wether the hardware flow control mode is enabled
                                           or disabled.
                                           This parameter can be a value of @ref USART_Hardware_Flow_Control */
} USART_InitTypeDef;

/** 
  * @brief  USART Clock Init Structure definition  
  */

typedef struct
{
    uint16_t USART_Clock;   /*!< Specifies whether the USART clock is enabled or disabled.
                               This parameter can be a value of @ref USART_Clock */

    uint16_t USART_CPOL;    /*!< Specifies the steady state of the serial clock.
                               This parameter can be a value of @ref USART_Clock_Polarity */

    uint16_t USART_CPHA;    /*!< Specifies the clock transition on which the bit capture is made.
                               This parameter can be a value of @ref USART_Clock_Phase */

    uint16_t USART_LastBit; /*!< Specifies whether the clock pulse corresponding to the last transmitted
                               data bit (MSB) has to be output on the SCLK pin in synchronous mode.
                               This parameter can be a value of @ref USART_Last_Bit */
} USART_ClockInitTypeDef;

/* Exported constants --------------------------------------------------------*/

/** @defgroup USART_Exported_Constants
  * @{
  */

#define IS_USART_ALL_PERIPH(PERIPH) (((PERIPH) == USART1) || ((PERIPH) == USART2) || ((PERIPH) == USART3) || ((PERIPH) == UART4) || ((PERIPH) == UART5) || ((PERIPH) == USART6) || ((PERIPH) == UART7) || ((PERIPH) == UART8))

#define IS_USART_1236_PERIPH(PERIPH) (((PERIPH) == USART1) || ((PERIPH) == USART2) || ((PERIPH) == USART3) || ((PERIPH) == USART6))

/** @defgroup USART_Word_Length 
  * @{
  */

#define USART_WordLength_8b ((uint16_t)0x0000)
#define USART_WordLength_9b ((uint16_t)0x1000)

#define IS_USART_WORD_LENGTH(LENGTH) (((LENGTH) == USART_WordLength_8b) || ((LENGTH) == USART_WordLength_9b))
/**
  * @}
  */

/** @defgroup USART_Stop_Bits 
  * @{
  */

#define USART_StopBits_1            ((uint16_t)0x0000)
#define USART_StopBits_0_5          ((uint16_t)0x1000)
#define USART_StopBits_2            ((uint16_t)0x2000)
#define USART_StopBits_1_5          ((uint16_t)0x3000)
#define IS_USART_STOPBITS(STOPBITS) (((STOPBITS) == USART_StopBits_1) || ((STOPBITS) == USART_StopBits_0_5) || ((STOPBITS) == USART_StopBits_2) || ((STOPBITS) == USART_StopBits_1_5))
/**
  * @}
  */

/** @defgroup USART_Parity 
  * @{
  */

#define USART_Parity_No         ((uint16_t)0x0000)
#define USART_Parity_Even       ((uint16_t)0x0400)
#define USART_Parity_Odd        ((uint16_t)0x0600)
#define IS_USART_PARITY(PARITY) (((PARITY) == USART_Parity_No) || ((PARITY) == USART_Parity_Even) || ((PARITY) == USART_Parity_Odd))
/**
  * @}
  */

/** @defgroup USART_Mode 
  * @{
  */

#define USART_Mode_Rx       ((uint16_t)0x0004)
#define USART_Mode_Tx       ((uint16_t)0x0008)
#define IS_USART_MODE(MODE) ((((MODE) & (uint16_t)0xFFF3) == 0x00) && ((MODE) != (uint16_t)0x00))
/**
  * @}
  */

/** @defgroup USART_Hardware_Flow_Control 
  * @{
  */
#define USART_HardwareFlowControl_None    ((uint16_t)0x0000)
#define USART_HardwareFlowControl_RTS     ((uint16_t)0x0100)
#define USART_HardwareFlowControl_CTS     ((uint16_t)0x0200)
#define USART_HardwareFlowControl_RTS_CTS ((uint16_t)0x0300)
#define IS_USART_HARDWARE_FLOW_CONTROL(CONTROL) \
    (((CONTROL) == USART_HardwareFlowControl_None) || ((CONTROL) == USART_HardwareFlowControl_RTS) || ((CONTROL) == USART_HardwareFlowControl_CTS) || ((CONTROL) == USART_HardwareFlowControl_RTS_CTS))
/**
  * @}
  */

/** @defgroup USART_Clock 
  * @{
  */
#define USART_Clock_Disable   ((uint16_t)0x0000)
#define USART_Clock_Enable    ((uint16_t)0x0800)
#define IS_USART_CLOCK(CLOCK) (((CLOCK) == USART_Clock_Disable) || ((CLOCK) == USART_Clock_Enable))
/**
  * @}
  */

/** @defgroup USART_Clock_Polarity 
  * @{
  */

#define USART_CPOL_Low      ((uint16_t)0x0000)
#define USART_CPOL_High     ((uint16_t)0x0400)
#define IS_USART_CPOL(CPOL) (((CPOL) == USART_CPOL_Low) || ((CPOL) == USART_CPOL_High))

/**
  * @}
  */

/** @defgroup USART_Clock_Phase
  * @{
  */

#define USART_CPHA_1Edge    ((uint16_t)0x0000)
#define USART_CPHA_2Edge    ((uint16_t)0x0200)
#define IS_USART_CPHA(CPHA) (((CPHA) == USART_CPHA_1Edge) || ((CPHA) == USART_CPHA_2Edge))

/**
  * @}
  */

/** @defgroup USART_Last_Bit
  * @{
  */

#define USART_LastBit_Disable     ((uint16_t)0x0000)
#define USART_LastBit_Enable      ((uint16_t)0x0100)
#define IS_USART_LASTBIT(LASTBIT) (((LASTBIT) == USART_LastBit_Disable) || ((LASTBIT) == USART_LastBit_Enable))
/**
  * @}
  */

/** @defgroup USART_Interrupt_definition 
  * @{
  */

#define USART_IT_PE     ((uint16_t)0x0028)
#define USART_IT_TXE    ((uint16_t)0x0727)
#define USART_IT_TC     ((uint16_t)0x0626)
#define USART_IT_RXNE   ((uint16_t)0x0525)
#define USART_IT_ORE_RX ((uint16_t)0x0325) /* In case interrupt is generated if the RXNEIE bit is set */
#define USART_IT_IDLE   ((uint16_t)0x0424)
#define USART_IT_LBD    ((uint16_t)0x0846)
#define USART_IT_CTS    ((uint16_t)0x096A)
#define USART_IT_ERR    ((uint16_t)0x0060)
#define USART_IT_ORE_ER ((uint16_t)0x0360) /* In case interrupt is generated if the EIE bit is set */
#define USART_IT_NE     ((uint16_t)0x0260)
#define USART_IT_FE     ((uint16_t)0x0160)

/** @defgroup USART_Legacy 
  * @{
  */
#define USART_IT_ORE USART_IT_ORE_ER
/**
  * @}
  */

#define IS_USART_CONFIG_IT(IT) (((IT) == USART_IT_PE) || ((IT) == USART_IT_TXE) || ((IT) == USART_IT_TC) || ((IT) == USART_IT_RXNE) || ((IT) == USART_IT_IDLE) || ((IT) == USART_IT_LBD) || ((IT) == USART_IT_CTS) || ((IT) == USART_IT_ERR))
#define IS_USART_GET_IT(IT)    (((IT) == USART_IT_PE) || ((IT) == USART_IT_TXE) || ((IT) == USART_IT_TC) || ((IT) == USART_IT_RXNE) || ((IT) == USART_IT_IDLE) || ((IT) == USART_IT_LBD) || ((IT) == USART_IT_CTS) || ((IT) == USART_IT_ORE) || ((IT) == USART_IT_ORE_RX) || ((IT) == USART_IT_ORE_ER) || ((IT) == USART_IT_NE) || ((IT) == USART_IT_FE))
#define IS_USART_CLEAR_IT(IT)  (((IT) == USART_IT_TC) || ((IT) == USART_IT_RXNE) || ((IT) == USART_IT_LBD) || ((IT) == USART_IT_CTS))
/**
  * @}
  */

/** @defgroup USART_DMA_Requests 
  * @{
  */

#define USART_DMAReq_Tx         ((uint16_t)0x0080)
#define USART_DMAReq_Rx         ((uint16_t)0x0040)
#define IS_USART_DMAREQ(DMAREQ) ((((DMAREQ) & (uint16_t)0xFF3F) == 0x00) && ((DMAREQ) != (uint16_t)0x00))

/**
  * @}
  */

/** @defgroup USART_WakeUp_methods
  * @{
  */

#define USART_WakeUp_IdleLine    ((uint16_t)0x0000)
#define USART_WakeUp_AddressMark ((uint16_t)0x0800)
#define IS_USART_WAKEUP(WAKEUP)  (((WAKEUP) == USART_WakeUp_IdleLine) || ((WAKEUP) == USART_WakeUp_AddressMark))
/**
  * @}
  */

/** @defgroup USART_LIN_Break_Detection_Length 
  * @{
  */

#define USART_LINBreakDetectLength_10b ((uint16_t)0x0000)
#define USART_LINBreakDetectLength_11b ((uint16_t)0x0020)
#define IS_USART_LIN_BREAK_DETECT_LENGTH(LENGTH) \
    (((LENGTH) == USART_LINBreakDetectLength_10b) || ((LENGTH) == USART_LINBreakDetectLength_11b))
/**
  * @}
  */

/** @defgroup USART_IrDA_Low_Power 
  * @{
  */

#define USART_IrDAMode_LowPower  ((uint16_t)0x0004)
#define USART_IrDAMode_Normal    ((uint16_t)0x0000)
#define IS_USART_IRDA_MODE(MODE) (((MODE) == USART_IrDAMode_LowPower) || ((MODE) == USART_IrDAMode_Normal))
/**
  * @}
  */

/** @defgroup USART_Flags 
  * @{
  */

#define USART_FLAG_CTS      ((uint16_t)0x0200)
#define USART_FLAG_LBD      ((uint16_t)0x0100)
#define USART_FLAG_TXE      ((uint16_t)0x0080)
#define USART_FLAG_TC       ((uint16_t)0x0040)
#define USART_FLAG_RXNE     ((uint16_t)0x0020)
#define USART_FLAG_IDLE     ((uint16_t)0x0010)
#define USART_FLAG_ORE      ((uint16_t)0x0008)
#define USART_FLAG_NE       ((uint16_t)0x0004)
#define USART_FLAG_FE       ((uint16_t)0x0002)
#define USART_FLAG_PE       ((uint16_t)0x0001)
#define IS_USART_FLAG(FLAG) (((FLAG) == USART_FLAG_PE) || ((FLAG) == USART_FLAG_TXE) || ((FLAG) == USART_FLAG_TC) || ((FLAG) == USART_FLAG_RXNE) || ((FLAG) == USART_FLAG_IDLE) || ((FLAG) == USART_FLAG_LBD) || ((FLAG) == USART_FLAG_CTS) || ((FLAG) == USART_FLAG_ORE) || ((FLAG) == USART_FLAG_NE) || ((FLAG) == USART_FLAG_FE))

#define IS_USART_CLEAR_FLAG(FLAG) ((((FLAG) & (uint16_t)0xFC9F) == 0x00) && ((FLAG) != (uint16_t)0x00))

#define IS_USART_BAUDRATE(BAUDRATE) (((BAUDRATE) > 0) && ((BAUDRATE) < 7500001))
#define IS_USART_ADDRESS(ADDRESS)   ((ADDRESS) <= 0xF)
#define IS_USART_DATA(DATA)         ((DATA) <= 0x1FF)

/**
  * @}
  */

/**
  * @}
  */

/* Exported macro ------------------------------------------------------------*/
/* Exported functions --------------------------------------------------------*/

/*  Function used to set the USART configuration to the default reset state ***/
void USART_DeInit(USART_TypeDef *USARTx);

/* Initialization and Configuration functions *********************************/
void USART_Init(USART_TypeDef *USARTx, USART_InitTypeDef *USART_InitStruct);
void USART_StructInit(USART_InitTypeDef *USART_InitStruct);
void USART_ClockInit(USART_TypeDef *USARTx, USART_ClockInitTypeDef *USART_ClockInitStruct);
void USART_ClockStructInit(USART_ClockInitTypeDef *USART_ClockInitStruct);
void USART_Cmd(USART_TypeDef *USARTx, FunctionalState NewState);
void USART_SetPrescaler(USART_TypeDef *USARTx, uint8_t USART_Prescaler);
void USART_OverSampling8Cmd(USART_TypeDef *USARTx, FunctionalState NewState);
void USART_OneBitMethodCmd(USART_TypeDef *USARTx, FunctionalState NewState);

/* Data transfers functions ***************************************************/
void     USART_SendData(USART_TypeDef *USARTx, uint16_t Data);
uint16_t USART_ReceiveData(USART_TypeDef *USARTx);

/* Multi-Processor Communication functions ************************************/
void USART_SetAddress(USART_TypeDef *USARTx, uint8_t USART_Address);
void USART_WakeUpConfig(USART_TypeDef *USARTx, uint16_t USART_WakeUp);
void USART_ReceiverWakeUpCmd(USART_TypeDef *USARTx, FunctionalState NewState);

/* LIN mode functions *********************************************************/
void USART_LINBreakDetectLengthConfig(USART_TypeDef *USARTx, uint16_t USART_LINBreakDetectLength);
void USART_LINCmd(USART_TypeDef *USARTx, FunctionalState NewState);
void USART_SendBreak(USART_TypeDef *USARTx);

/* Half-duplex mode function **************************************************/
void USART_HalfDuplexCmd(USART_TypeDef *USARTx, FunctionalState NewState);

/* Smartcard mode functions ***************************************************/
void USART_SmartCardCmd(USART_TypeDef *USARTx, FunctionalState NewState);
void USART_SmartCardNACKCmd(USART_TypeDef *USARTx, FunctionalState NewState);
void USART_SetGuardTime(USART_TypeDef *USARTx, uint8_t USART_GuardTime);

/* IrDA mode functions ********************************************************/
void USART_IrDAConfig(USART_TypeDef *USARTx, uint16_t USART_IrDAMode);
void USART_IrDACmd(USART_TypeDef *USARTx, FunctionalState NewState);

/* DMA transfers management functions *****************************************/
void USART_DMACmd(USART_TypeDef *USARTx, uint16_t USART_DMAReq, FunctionalState NewState);

/* Interrupts and flags management functions **********************************/
void       USART_ITConfig(USART_TypeDef *USARTx, uint16_t USART_IT, FunctionalState NewState);
FlagStatus USART_GetFlagStatus(USART_TypeDef *USARTx, uint16_t USART_FLAG);
void       USART_ClearFlag(USART_TypeDef *USARTx, uint16_t USART_FLAG);
ITStatus   USART_GetITStatus(USART_TypeDef *USARTx, uint16_t USART_IT);
void       USART_ClearITPendingBit(USART_TypeDef *USARTx, uint16_t USART_IT);

#ifdef __cplusplus
}
#endif

#endif /* __STM32F4xx_USART_H */

/**
  * @}
  */

/**
  * @}
  */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
